How many countries are there in the South America?

How many countries are there in the South America? How many countries are there in mainland South America? How many countries are there in the How many tea -drinking countries are there in the text? how many countries are there in the world?(please write it i Who knows how many countries there are on the earth there are many( ) in America There are many-----in America How many [ ] are there in the hospital? there are many countries in the word 为什么country 要变countries? How many letters are there in the worid?There are( ). How many terms are there in a school year in America?